Really strange issue.. :(
If you set your app to G (in the console) all ads should be in line with the family program. I have it for several apps, and they are approved for the family program just fine. It is clearly stated that all ads should be suitable for families and children, if set to G.
(IF the rejection would be that you were not compliant with the family policy it should state this:
Issue: Violation of Families Policy Requirements, but you get a different violation status?)
IF you get a violation from Google and resubmit to review the same build they will reply with the same print screen and same violation. A new review is only done if you post a new build when resubmitting (at least that is what they told me).
Was both your account and app set to G in admob before submitting your latest build?
Normally the review team is helpful when you reply and ask what is needed to adjust. At least this is my experience.